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Detectionmediumtest

Azure Kubernetes Network Policy Change

Identifies when a Azure Kubernetes network policy is modified or deleted.

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Austin SongerCreated Sat Aug 07Updated Tue Aug 2308d6ac24-c927-4469-b3b7-2e422d6e3c43cloud
Log Source
Azureactivitylogs
ProductAzure← raw: azure
Serviceactivitylogs← raw: activitylogs
Detection Logic
Detection Logic1 selector
detection:
    selection:
        operationName:
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/NETWORKING.K8S.IO/NETWORKPOLICIES/WRITE
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/NETWORKING.K8S.IO/NETWORKPOLICIES/DELETE
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/EXTENSIONS/NETWORKPOLICIES/WRITE
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/EXTENSIONS/NETWORKPOLICIES/DELETE
    condition: selection
False Positives

Network Policy being modified and deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.

Network Policy being modified and deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

References
1
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learn.microsoft.com
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microsoft.com
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microsoft.com
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medium.com
MITRE ATT&CK
Rule Metadata
Rule ID
08d6ac24-c927-4469-b3b7-2e422d6e3c43
Status
test
Level
medium
Type
Detection
Created
Sat Aug 07
Modified
Tue Aug 23
Author
Austin Songer
Path
rules/cloud/azure/activity_logs/azure_kubernetes_network_policy_change.yml
Raw Tags
attack.impactattack.credential-accessattack.t1485attack.t1496attack.t1489
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